Shaft-coupling.



H. T. HALLOWELL. SHAFT COUPLING. APPLwATIoN funn lMAR. 1a. 1909.

` 1,107,606, Patented Aug.18, 1914.

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H. T. HALLOWELL.

SHAFT COUPLING. APPLIOATION FILED 14.41.1.16. 1909.

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HOWARD T. HALLOWELL, OF PHILADELPHIA, PENNSYLVANIA, i

SHAFT-COUPLING.

Specification of Letters Patent.

Patented Aw. 1s, 1914.

Application `filed March `16, 1909. i Serial No. 483,805.

the usual cast metal structures, and materially cheaper' than the same.

A further feature of my invention is the improved method or process of producing tle sections or shells comprising the cou- Abstill further object of my invention is to provide the sheet metal couplingwith an annular cover designed to inclose the same vand bridge the space between the flanges of the shells; such cover serving to prevent accidents to workmen, and at the same time rendering the coupling capable of use as a pulley.

Other features of my invention will be more fully referred to hereinafter, reference being had to the accompanying drawings, in which:

Figure 1, is a sectional elevation on the line c-a, Fig. 2, illustrating `one form of shaft `coupling embodying my invention; Fig. 2, is an end elevation of the structure shown in Fig. 1; Fig. 8, is a sectional elevation, similar to Fig. l, on the line Ziff), Fig. 4, showing another' form of shaft coupling embodying my invention; Fig. Ll, is an end elevation of the structure shown in Fig. 3, and Figs. 5, 6, 7 and 8, are sectional views illustrating shaft couplings embodying my invention, in which the hubs of the shells have flanged ends extending over the sleeve or bushing embracing the meeting ends of the shafts. l

In the drawings herewith, l, l, represent the meeting ends of the shafts to be coupled, and 2 a sleeve or bushing for the same, which sleeve may be of any approved type; preferably, however, one that has a tapered outer wall with its body split or otherwise con structed so as to be capable of compression against the shaft ends, lthough my invention does not relate in any manner to the form of sleeve orbushing with which my coupling may be employed.

To clamp the sleeve or bushing to the relates to shaft couplings,

meeting ends of contour, pressed into shape; each of the flanged members shown in Figs. l and 3, having a cup 3 forming a hub with an end flange d disposed beyond the ends of the sleeve or collar 2 and just out of contact with the shaft, and

an annular flange or wall 5 surrounding the cup, to which flange or wall the coupllng means are connected; said annular flanges or walls 5 terminating in peripheral flanges or guard walls substantially parallel to the cups embracing the sleeve or bushing 2. rlhe flanges Ll. serve as strengthening or reinforcing means for the hubs of the coupling and resist any tendency `of said hubs to split when drawn toward each other over the tapered walls of the sleeve or bushing, and at the same the connecting means.

' Means for connecting the flanges or walls 5 of the coupling and serving also to draw the hubs of the ncoupling over the ends of the sleeve or bushing, comprise bolts y7 having suitable nuts 8, and to strengthen these parts of the coupling structure, the annular walls or flanges 5 are provided with struck-up portions 9, which are apertured to receive the bolts. Compression strains due to taking up on said bolts in drawing the sections of the coupling together come directly against this relnforced portion. The

cups or hubs 3 may be further strengthened by ribs 10 struck up and disposed diagonally with respect to the annular flanges `5, as clearly indicated in Figs. 2 and Il.

To span the space between the outer peripheral walls 6 of the flanges 5 of the structure, and form an additional guard, an annular band or sheet of lighter metal may be provided, as indicated at ll; said band being suitably secured to one of the outer peripheral walls of said sections, and, as indicated at 12, rivets may be employed for the purpose. This band serves the double purpose ofclosing the gap between the flanges 5 preventing all danger of a work-` mans clothing being caught therein, and at the same time forming a pulley by lwhich a belt may be driven.

the shafts, I provide flanged" members or shells of substantially the same'` which are made of sheet metal 1,

time they act as guardsfor 1 The structure shown in Figs. 3 and fl, is

.annular band ll,

11 is in two pieces, bot-h of which may be riveted to one of the flanges 5 of the structure. In this instance the rim or guard 1l may have its marginal edges turned over as indicated at lla.

ln Fig. 5, 1 have shown a structure in which annular flanges or walls 5'- of the coupling members and having the hubs 3, are provided with inwardly projecting peripheral walls or flanges 6a, and the space between such flanges is spanned by an annular band l1, forming a rim or guard, which may be riveted at l2 to one of said flanges v6a. The band ll may be turned over against one of the flanges or walls 5a, and in thisinstance the rolled portions 13 of the walls 5a serve as guards for the bolts and nuts. in this structure also, the cups 3 forming the hubs may be provided with a reinforcing ribl 14.

1n the structure shown nular walls or flang'es 5b of the coupling members have outwardly turned or rolled edges l5 which serve to strengthen said walls and also act as guards.

4ln the structure shown in Fig. 7, the coupling' members have annular walls or .flanges 5C .with inwardly offset annular portions 16 which are again turned outwardly to form annular or peripheral walls 6 which serve as guarding means for the coupling and also as a. pulley rim.

The `structure shown in Fig. 8, is` substantially the same as that shown 'in Fig. 5, except that the peripheral wall Ga of one of the sections is shorter than the other. The peripheral wall of the other shell carries an which may be riveted thereto at l2, or otherwise secured to the same to serve as a guard, or pulley rim.

In the structures shown in Figs. l to 8, both inclusive, the cup members or hubs 8,

in F i0'. 6 the anare provided with reinforcing means in the shape of the inwardly turned flanges 4l which inclose the ends of the sleeve or bushing 2. in addition, in the forms of coupling shown in Figs. 1 and 3, I provide a supplemental c cap or hub 21, .which may be shrunk onto the hub 3, and may be provided with a flange 22 overlying the Hange fr.

The structure shown in Figs. 5 to 8, inclusive, have their coupling members secured together by the bolts 7 and nuts 8, in the same Figs. 1 and 3.

all of the structures forming the subject of my invention are made of sheet metal pressed into shape, one thickness being employed for the coupling' shells, while another and lighter weight is preferably employed for the guards or pulley rims. The coupling Ysleeve may be of any approved type having a tapering exterior for engagement by the walls of the coupling' shells.

The imporved method or process of makmanner as the structure shown in4 ing my improved sha-ft coupling embodies the following steps: From sheet metal, preferably sheet steel of the desired gage and temper, and of such a characteras to draw readily, I cut circular blanks of a size sufficient to form one of the halves of my improved coupling. These blanks are then placed in suitable dies which form them into cup-shaped members by a drawing action; the margin of said blank being held while the central cup-shaped portion is formed. edges of the marginal flanges l to form strengthening flanges disposed substantially parallel with the cup-shaped ends from which the hubs are formed. The blank is then placed in a cup-shaped die having tapered walls and' a tapered plug is driven into 'the blank to give the hub smooth linished sides and surfaces. 1 then form apertures for the passage of securing means, such as bolts, in the marginal flange of the coupling members and pierce or cut the bottom of the cup-shaped portion or hub for the passage of the shaft when the structure is in use, and simultaneously 4with the formation of the bolt holes 1 press up the web of metal to form bosses and add strength to the said flange.

l claim l. 1n a shaft coupling, the combination with a compressible sleeve receiving' shaft ends to be coupled, of a pair of pressedmetal members having tapering hubs embracing the ends of said sleeve and outwardly extending walls at right angles to the axis of said hubs forming bolt receiving portions parallel with each other, said hubs having' inwardly extending flanges adjacent the ends of the sleeve, said walls terminating outwardly with flanges or rims forming stiffening elements disposed substantially at right angles thereto, and means for connecting said walls.

2. In a shaft coupling, the combination with a compressible sleeve or bushing receiving shaft ends to be coupled and having tapering' external walls, of a plurality of separate pressed sheet-metal clamping' ele ments litt-ed thereon, each of said elements having a web or disk portion lying' at right angles to the axis of the shaft, a tapering hub portion integral with said web and having 'a rounded contour at the junction of said parts, a flanged rim at the outer annular edge ofl said web, and a stiffening flange at the end of the hub portion, and means for confining said clamping elem-ents together and in engagement with saidcompressible sleeve or bushing.

3. In a shaft coupling', the combination with a compressible sleeve or bushing receiving' shaft ends to be coupled, said bushing having' tapered ends, of a plurality of separate pressed sheet metal clampingele- The next action is to turn the ments fitted thereon, said elements having web or disk portions lying at right angles to the axis of the shaft, tapering hub poi'- tions integ 'al with said webs iand having a 5 rounded contour et the junction of said parts, annulaiiianged rims carried by said Webs, and stii'ening 'flanges :it the smaller ends oi? the huh portions, the Web or disk portions of sai-id clamping elements having l0 reinforcing and strengthening moans, and

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

